UST Mamiya Proforce Gold XX Graphite Wood Shafts Features: Updated version of the iconic original ProForce Gold shafts of 25 years ago, using modern materials and design to provide more stability with today’s modern club heads. Designed for players seeking a flatter, more penetrating ball flight. High Modulus Carbon Fiber provides greater control for both aggressive and smooth tempo players. Stiffer profile at the mid and tip sections provide more spin control at impact. Reduced resin content (25% less) provides better feel and stability. Click here for Trimming Instructions